| 盐胁迫下施肥对棉花生长及氮素利用的影响 |
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| 引用本文： | 代建龙,卢合全,李振怀,段留生,董合忠.盐胁迫下施肥对棉花生长及氮素利用的影响[J].生态学杂志,2013,24(12):3453-3458. |
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| 作者姓名： | 代建龙 卢合全 李振怀 段留生 董合忠 |
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| 作者单位： | (;1.山东省农业科学院山东棉花研究中心/黄淮海棉花遗传改良与栽培生理重点实验室, 济南 250100; ;2.中国农业大学作物化学控制研究中心, 北京 100091) |
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| 摘 要： | 利用海水配制不同含盐量(0、0.15%、0.3%)的土壤盆栽棉花,在可移动遮雨棚内研究了不同施肥(N、NK、NP、NPK)处理对棉花生长、氮素吸收与利用的影响.结果表明: 盐胁迫和施肥均影响棉花生物产量、棉株氮素农学利用效率、氮素生物利用效率和氮素积累量,且两者存在显著的互作效应.施肥能提高盐胁迫下棉株氮素利用效率及氮素积累量,并显著增产,不同施肥处理中以N、P、K肥料配合施用的效果最好;施肥效果受盐胁迫程度的影响,低盐胁迫(0.15%)下的施肥效果好于中度盐胁迫(0.3%).
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| 关 键 词： | 棉花 盐胁迫 施肥 氮素利用 |
Effects of fertilization on cotton growth and nitrogen use efficiency under salinity stress. |
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| DAI Jian-long,LU He-quan,LI Zhen-huai,DUAN Liu-sheng,DONG He-zhong.Effects of fertilization on cotton growth and nitrogen use efficiency under salinity stress.[J].Chinese Journal of Ecology,2013,24(12):3453-3458. |
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| Authors: | DAI Jian-long LU He-quan LI Zhen-huai DUAN Liu-sheng DONG He-zhong |
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| Institution: | (;1.Cotton Research Center, Shandong Academy of Agricultural Sciences/Key Laboratory of Cotton Breeding and Cultivation in Huang Huai Hai Plain, Ji’nan 250100, China; ;2.Crop Research Center for Chemical Regulation, China Agricultural University, Beijing 100091, China) |
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| Abstract: | Cotton (Gossypium hirsutum) was raised at different salinity levels (0, 0.15% and 0.30%) by irrigating with fresh or sea water. The effects of fertilization (N, NK, NP and NPK) on plant growth, nitrogen (N) uptake and N use efficiency were studied. The results showed that salinity and fertilization both affected the biomass, agronomic N use efficiency, N bioavailability and nitrogen accumulation of plants, and significant interaction was observed between the two factors. Fertilization could improve N use efficiency and nitrogen accumulation of plants under salinity stress, and significantly promoted the cotton yield. Among the fertilization treatments, N combined with P and K had the best effect. The benefit of fertilization was better under low salinity (0.15%) than under moderate salinity (0.3%). |
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| Keywords: | cotton salinity stress fertilization nitrogen utilization |
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